Addressing-machine.



J. S. DUNCAN.

ADDRESSiNG MACHINE.

APPLICATION FILED JULV 6.1914.

Patented Dec. 19,1916.

5 SHEETSSHEET 1.

J. S. DUNCAN.

ADDRESSING MACHI NE.

APPLICATION FILED JULY 6. 1914.

1,209,414. Patented Dec. 19, 1916.

5 SHEETSSHEET 2.

J. S. DUNCAN.

ADDRESSING MACHINE.

' APPLICATION FILED JULY 6. 1914.

Patented Dec. 19, 1916.

5 SHEETS-SHEET 3.

LZUQAE'Q.

J. S. DUNCAN.

ADDRESSING MACHINE.

APPLICATION FILED JULY 6,1914.

1,209,414. Patented Dec. 19, 1916.

5 SHEETS-SHEET 4- J. S. DUNCAN.

ADDRESSING MACHINE.

APPLICATION FILED JULY 6.19M.

1 gfll, Patented Dec. 19, 1916.

5 SHEETSSHEET 5.

an ion.

JOSEPH S. DUNCAN, OF CHICAGO, ILLINOIS, ASSIGNOR T ADDRESSOGRAPH COMPANY. OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ADDRESSING-MACHINE.

Specification of Letters Patent.

Patented Dec. 19, 1916.

Application filed July 6, 1914. Serial No. 849,086.

To all whom 2'1. may camera:

Be it known that I, JOSEPH S. DUNCAN,

a citizen of the United States. residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful ployed for printing addresses on envelops and letters.

The particular type of addressing machine with which I have embodied the invention is one well known commercially at 1-5 the present time and comprises a magazine for holding a stack of separate printing devices which are fed one at a time to inking and printing positions, a platen for producing the printing impression, and means for returning the printing devices after printing to their original position inthe storage drawer. It has become customary in the use of these printing devices to employ tabs which are detachably engaged with the printing devices for classifying them in various ways. In my Patent No. 1,082,505, dated December 30, 1913, I have shown a printing device and a reversible tab, there termed a tripper, whereby twenty-four different classifications may be obtained by properly engaging the tabs with the printing devices.

I have also found that by employing two reversible tabs on each printing device I can obtain 276 different classes and this is important for many purposes, for evample .to indicate expirations of. subscriptions.

T he object of this invention is to provide a machine for automatically operating according to any particular classification of the printing devices to take an impression from all printing devices in the predetermined class or to skip the printing devices in such class and take an impression from all of the other printing devices passmg through the machine. And the invention also has for its object to provide for an ex-' tensive classification of the printing devices and to automatically select the printmg devices in the predetermined class for printing or skipping according to the way the machine is set.

The invention has for its object further to provide means for disregarding the classification of the printing devices passing through the machine so that an impression will be taken from all of said devices.

The invention has other objects in View which will more fully appear hereafter in the detail description of the accompanying drawings in which Figure 1 is a side elevation of as much of the machine as is necessary to understand the invention; Fig. 2 is an enlarged view, partly broken away and partly in section, showing the operating mechanism at one side of the machine more fully than is shown in Fig. 1, the platen arm being partly indicated in broken lines; Fig. 3 is a plan view of the parts shown in Fig. 2; Fig. -L is a side elevation, partly in section, of the operating parts of the side of the machine opposite to that shown in Figs. 1 and 2', Fig. is a rear elevation and Fig. 6 is a side elevation, partly in section, showing the reversing device, the restorer and the throw-out device with their associated elements; Fig. '7 is a front elevation of the selector frame and bars in their proper relation to a printing device in the machine, a portion of which is shown in section; Fig. 8 is a detail sectional view showing the selector pins and bars.

ldeferring to the drawings. 8 is a frame and 9 is a magazine for holding a stack of printing devices 10. Theprinting devices are fed forward one at a time from the bottom stack by a carrier 11 which is actuated by the operating lever 12 pivoted at 13 on the main frame and this lever may be operated by a foot pedal or by power suitably applied thereto in a familiar manner. platen arm 14 carrying a platen 15 is pivotally mounted on the frame at 16 and is operated from the lever 12 through a link 17 which is pivotally connected at 18 to said lever and at 19 to an intermediate rocker 20 which is pivotally mounted on the pivot shaft 16. The intermediate rocker carries a pawl 21 which is arranged to engage a wear block 22 on the platen arm to operate the latter as will be hereinafter more fully described.

The movement of the operating lever and the intermediate rocker is limited by the engagement-of adjustable stops 23 on the lever with a lug 24 on the base 25 of the machine (Fig. 1). The intermediate rocker engages the platen arm at 26 to restore said arm to its normal elevated position and the platen 110 The arm is limited in its forward movement by a stop 27 on the main frame. A rocker frame 28 is pivotally mounted on the pivot shaft 16 and is actuated from the operating lever by a link 29. Arms 30 on this frame are arranged to operate the inking device 31 through suitable connections which it is unnecessary to describe, and an arm 3'2 on the rocker frame carries a pawl 32 for actuating a ratchet wheel in a suitable manner to operate the carrier intermittently.

It will not be necessary to further describe the general construction of the machine for the purpose of understanding my invention and also because the invention may be ap plied to machines of anions constructions with proper adaptations.

A selector frame 33 is pivoted at 34 on posts 35 on the main frame and this frame extends across the path of travel of the printing device between inking and printing positions. It may be noted here that the selector devices operate at or about the same time as the inking device but upon a printing device which has already been inked. A selector bar 36 projects across the path of travel of the printingdevice in front of the selector frame and is provided with a plurality of openings 38 and is pivotallymounted at 37 on the selector frame. A headed pin 39 is adapted to be inserted in any one of these openings to projectrbelow the bar, as shown in Figs. 2, 7 and 8, and engages the tab 40 in a predetermined class of the printing devices 10 with which it is engaged.

By employing reversible tabs and printing devices adapted to hold tabs in twelve different positions, as disclosed in my patent aforesaid, I am able to provide for twentyfour different classes and this is taken care of in the machine automatically by the use of one selector bar having twenty-four openings and a single selector pin disposed in the opening which corresponds with the class which it is desired to print or not to print. But I have found that by using a second selector bar with twenty-four openings and a single selector pin in each bar I am able to take care of 27 6 classes in. the same machine and as this larger classification is desirable in many instances I provide another selector bar 41 which is pivotally mounted at 37 on the selector frame and extends across the path of travel of the printing devices in front of the selector bar 38 (Fig. 3); This second selector bar has twenty-four openings 42 and an angular selector pin 43 which is carried by the bar and projects backward to aline transversely of the ma-- chine with selector pin 39 so that while the selector pin 39 is arranged to engage one tab on a printing device the selector pin 43 will be arranged to engage another tab on the same rinting device. Any suitable means for detachably securing the selector pins in the-proper openings in the bars may be employed and lfor holding pin 39 in bar 36 I have shown a removable plate 4.4 adapted to be engaged at one end with a fixed stud 45 on the bar 36 and secured in place at its other end by a thumb screw 46 while the angular pin 43 is secured in its bar 41 by a screw 47 which enters one of the openings 42 which are screw-threaded for this purpose. It will be observed that by properly positioning the selector pins in their respective bars for any particular class, as determined by the position of two tabs on the printing devices, these pins will only engage those tabs thus positioned and effect the printing or non-printing of the devices in that class as more fully described hereafter.

The selector frame 33 is normally sustained in elevated position by a spring plunger 48 which is carried by this frame and engages the main frame 8 (Fig. 4). The selector bars are each provided with a hook arm 49 extending rearwardly fro-m the pivot 37 (Fig. 2) and a pin 50 carried by the selector frame projects over these two hook arms and normally sustains the selector bars in the elevated position shown in Fig. 2. Coil. springs 51 are attached to the selector bars and to the main frame 8 (Fig. 4) to hold the hook arms in engagement with the pin- 50, thereby normally maintaining the hook arms in a predetermined position for the better operation of the parts with which they cooperate.

In the operation of the machine, when ever the selector frame is depressed the two selector bars carried thereby will be correspondingly depressed but the movement of the frame is always within fixed limits, whereas the downward movement of the selector bars may be as great as or less than the downward movement of the frame. When a printing device of the predetermined class. according to which the selector pins are set, reaches a position beneath the selector bars the pins will engage the tabs on the downward movement of the selector frameand bars and thus limit the downward movement of the selector bars while the frame continues to its regular limit; thereby causing the hook ends of the hook arms to lower out of operative relation to the tripper lever. This engagement of the selector pins with the tabs controls the printing operation through mechanism now to be described.

To effect the depression of the selector frame and the bars carried thereby I provide a depressor device 52 which is pivotally mounted at 53 on one of the arms 30 of the rocker frame 28 and carries an anti-friction roller 54 at its outer end (Fig. 4). A cam 55 is mounted on the selector frame in the path of travel of the roller 54: and a recess 56 is provided at the upper end of this cam to receive said roller. The depression of the selector frame is effected by the roller 54 traveling up on the cam 55 which causes the selector frame to swing downward on its pivot carrying with it the selector bars, as hereinbefore mentioned. When the roller 54 rides off the cam 55 into the depression 56 the selector frame has passed the limit of its depression and is partly released so that it may be raised a short distance, carrying the selector bars with it, by the spring plunger 48 to clear the path of travel of the printing devices to avoid liability of interruption in the travel thereof. The recess 56 not only provides for the initial upward movement of the selector frame, as just described, but it also acts to retain the depressor device in position against accidental displacement which might disarrange the operative parts of the machine. The upward movement of theselector frame is limited by a stop 57 which engages the ink box 58 or other fixed part of the machine. The lower end of the depressor device is arranged to engage the arm 30 and rest thereon to dispose the roller 54 in proper relation to the cam 55.

The selector mechanism may be thrown out of operation by shifting the depressor device over on its pivot to the position shown in broken lines in Fig. 4 with the detent 59 engaged with the opening 60 to lock it.

While the depressor device is in this position the machine can continue in operation but the selector frame and bars will remain stationary and no impression will be taken from the printing devices passing through the machine. j

A trip lever 61 is pivotally mounted at 62 on the main frame of the machine and the upper end of this lever has a suitable hook 61' to engage the hooks on the ends of the arms 49 carried by the selector bars (Fig. 2'). This trip lever is provided with a rearwardly projecting. arm 63 which carries an anti-friction roller 64. A tripper 65 is pivotally mounted at 66 on the main frame of the machine and this tripper carries a reverser 67 pivotally mounted thereon at 68 to engage the roller 64, anda roller 69 at its lower end to engage the platen arm operating pawl 21 (Figs. 2, 6).

A restorer awl 70 is mounted on the cocentric shaft 7 1 (Fig. 5) carried by the intermediate rocker 20 and this pawl is arranged. to engage the wear plate 72 on the arm 68 of the trip lever 61 to restore the trip lever to'engagement with the hook arms 49 after the selector mechanism has operated. The hook ends of the arms 49 are undercut with respect to the pivot 37 and .the sidewise will be locked against any accidental displacement due to vibration of the machine.

To facilitate the operation of the selector mechanism it is desirable to release the trip lever from this locking engagement with the hook arms at each operation of the machine so as always to provide for the operation of the selector mechanism when required'by a printing device of the predetermined class, and to this end I preferably arrange the restorer pawl to swing the trip lever at each operation of the machine forward out. of engagement with the. hooks of the arms 49. It will be readily understood that if provision were not made for releasing the lip 61' from the hooks of the arms 49 in this way it would be necessary, by reason of. the angular engagement of these parts, to exert considerable force to depress the hook arms relative to the trip lever lip and the selector pins would engage the printing plate tabs with correspondingly greater force and, perhaps, ultimately result in injuring the tabs. This is overcome by swinging the trip lever forward at each operation of the machine to release the lip 61 from the hooks of arms 49 so that whenever a printing plate of the predetermined class registers with the selector mechanism the selector frame will operate while the selector pins engage the tabs of the printing device lightly and only sufficiently to check the downward movement of the selector bars' with the selector frame, whereby the hook ends of the arms 49'are swung downward sufficiently for the hooks thereon and the lip 61' on the trip lever to clear, whereupon the spring 73 swings the trip lever rearward and beyond the ends of the hook arms 49 against the stop 73. If the printing device is not of the predetermined class, the trip lever will simply move forward and then return to its normal position with the lip 61 engaged with the hooks of the arms 49. This movement of the trip lever at each operation of the machine is effected, as before mentioned, by the'restorer which engages the wear plate 72 to swing the trip lever forward and slides off of the end of the wear plate on the continued upward movement of the restorer so that the trip lever may swing backward underthe influence of spring 73 into normal position in engagement with the hooks of the arms 49. The restorer pawl is arranged to bear against a pin 74 on the ini termediate rocker and is yieldingly held in operative position by a spring 75 located between its lower end and the rocker (Figs. 2 and 5).

1 .1 The reverser has an inclined face 6'! with which the roller 64 engages in the normal operation of the machine when for printing from tabs. Thus the tripper is held position with the roller 69 in en with the pawl 21 to prevent the p engaging the wear block 22 on the platen arm 14 (Fig. 5.) When the trip lever is disengaged from the hook arms 49. and swings rearward the roller 64 will be carried downward (the inclined face on the reverser providing clearance for this movement) and thereupon the tripper is permitted to swing forward sufliciently to permit the pawl 21 to engage on its upward movement the wear block 22. .The pawl 21 is urged forward by the spring 76 and a shoulder 77 limits this forward movement. This spring 76 is of sufficient strength not only to thrust the pawl forward but also to swing the tripper on its pivot. When the pawl 21 engages the wear block 22 it swings the platen arm and the printing operation is performed, after which the parts are returned to normal position by the operation of the restorer as hereinbefore described. The platen arm 14 may be returned to normal position by any suitable mechanism well-known in the art.

The ,reverser block 67 acts as a sort of wedge between the roller 64 and the center 68 to swing the tripper and its roller 69' rearward and normally hold the pawl 21 out of position to engage the wear block 22. When the roller 64 is lowered by the rearward swing of the trip lever the tripper is permitted to swing forward carrying the roller 69' a suflicient distance to permit the pawl 21 to engage the wear block 22 and operate thethe tripper is swung farther forward carrying the roller 59 forward sulficiently to permit the pawl 21 always to engage the wear block 22. Whereas in the operation of the machine formerly described the printin devices in a predetermined class only'wou d be printed, now in this position of the reverser (Fig. 6) those printing devices will be skipped and all other prlnting devices passing through the machine Wlll be printed. When a printing device of the predetermined class is registered with the selector mechanism, with the parts in the position shown in-Fig. 6, the tripper will be swung backward to the position shown in broken lines to prevent pawl 21 from engaging the wear block and operating the platen, after which the restorer restores the parts so that the pawl 21 will normally engage the block 22. By simply shifting the position of the reverser in this manner the operator can change the operation of the machine to print only those printing devices in a predetermined class and skip the rest, or to skip those printing devices in a predetermined class and print all the rest.

I have heretofore described the way in which the selector frame and bars may be thrown out of operation b shifting the po sition of the depressor evice, whereupon none of the printing devices passing through the machine will print. It may be desired to print from all of the printing devices regardless of the tabs and for this purpose I provide for shifting the restorer. The restorer is mounted on" theeccentric part of the shaft 71 -(Fig. 5) and this shaft can be rotated to adjust it from one position to the other for the purpose described. The shaft is longitudinally movable in its bearings in the intermediate rocker 20 and is'held by spring 80 with the locking pin 81 in engagement with the recess 82. By pulling the shaft against the influence of spring 80 to release locking pin 81 it can be rotated until the pin 81 will seat in the. recess 83 which position of the eccentric will throw the restorer out of operative relation to the wear I block 72. Until the trip lever is released from the hook arms the machine will continue in operation to print from tabs as before, but the first printing device in the predetermined class--with tabs arranged in position corresponding to the position of the selector pinswill disengage the trip lever from the hook arms, and as the restorer is out of operative position the machine will now continue in operation printing from each printing device. The trip lever may be disengaged from the hook arms by simply tripping the selector bars by hand just asthey are automatically tripped by the printing device to accomplish the above change in the operation of the machine. The selector frame and bars will continue in operation, but without performing any function 1 and to avoid this unnecessary wear on the machine the depressor should be shifted as before described.

"In the ordinary operation of the machine to print from tabsthat is to say, to print from all devices in a predetermined class the parts are timed so that the intermittent movement of the carrier takes place after the printing operation is complete and while the platen arm is returning to normal elevated position. The printing device is carried to inking, selecting and printing positions consecutively and with intermittent movement to allow sufficient time in each position for the required operation. The parts are set by a printing device in selecting position for operation of the platen arm when that printing device reaches printing position.

ing pawl is held out of operative relation to the platen arm, and the restorer is arranged to operate in its regular manner. \Vhen a printing device without tabs or in any class other than the predeterminedclass arrives in selecting position, the parts operate just the same as if no printing device were there; the selector frame carries the selector bars down to the limit of their move ment, the trip lever makes a quick movement forward and back into engagement with the hook arms, which do not swing downward into disengaging position, and the platen operating pawl rides up behind the block 22 and roller 69 without operating the platen arm. \Vhen a printing device in the predetermined class is registered in selecting position the first selector bar, (the one nearest the selector frame) is arrested in its downward movement, thereby disengaging the hook arm on said bar from the trip lever so that the trip lever will release the tripper so that the pawl 21 will engage block 22 and operate the platen arm. If the printing device carries two tabs the second selector bar and pin are used in orderto effect the operation, it being understood that with two selector bars there are two hook arms, both of which are controlled in the same manner and must be depressed to release the trip leverk Thus, it will be i seen that a printing device in the predetermined class will trip the machine while in selecting position so that on the next movement of the platen, when said printing device has been moved to p rintlng position,'

the platen arm will operate to take an impression from said printing device.

It is believed that the operation of the machine will be understood from the foregoing description in which the operations of the several groups of mechanism have been described in connection with the construction thereof. The'machine illustrated in the drawings is adapted to be operated by foot power or by motor power applied to the operating lever in any suitable man ner.

I have shown and described the machine equipped with two selector bars and pins for operating with 276 classes but it will be readily understood that the front selector bar and pin may be removed and the machine used with 24classes. Of course it will be necessary to use the reversible tabs,

and printing devices each provided with twelve positlons for'the tabs, as disclosed in my Patent No. 1,082,505 to provide the classes mentioned, or some other construction of printing devices and tabs which will 70 control the operation of the selector pin or pins in a manner to effect the operation of the machine as herein described. For this reason I do not limit my present invention to use with the printing devices and tabs of my patent aforesaid, and in this connection it may be observed that if the'tabs at not made reversible only twelve classes may be provided with printing devices having twelve positions for tabs. The number of classes with this type of printing device is controlled by the number of positions in which the. tabs maybe located thereon and,

as' disclosed in my patent aforesaid, this number can be doubled by making the tabs reversible. By using reversible tabs on printing devices each provided with twelve positions for tabs I provide 276 classes.

The number of classes is governed in the first instance by the number of positions'in which a single tab may be used on the printing device and this number is doubled by employing a reversible tab, and by employing two reversible tabs on the same printing device I am able to provide 276 classes. When a single tab is used a single selector bar and pin willbe used and where two tabs are used on the same printing device two selector bars and pins will be required. It will be readily understood that by increasing the number of positions in which the tabs may be placed on the printing devices more classes may beprovided for and i the same result may be accomplished by the addition of a third selector bar and pin-in the same manner that the second selector bar and pin has been added.

I claim:

1. In a machine of the character described, the combination of a movable platen, a selector frame and a selector bar carried thereby, said frame and bar being movabl e conjointly and relatively, a selector pin on the baradapted to engage a printing device to provide relative movement of the frame and bar, and means for utilizing said relative movement to control the movement of said platen.

2. In a machine of the character described, the combination of a movable platen, a pivoted selector frame and a selector bar pivotally mounted on the frame, said frame and bar being movable conjointly and relatively, a selector pin on the bar adapted to engage a printing device to provide relative movement of the frame and bar, and means for utilizing said relative movement to control the on said main frame, a selector bar pivotally mounted on the frame in front of the pivot of said frame, said frame and bar being movable conjointly and relatively, a selector pin on the bar adapted to engage a printing device to provide relative movement of the frame and bar, and means for utilizing said relative movement to control the movement of said platen.

4:. In a machine of the character described, the combination of a main frame, a carrier traveling on the frame and carrying printing devices, a selector frame pivotally mounted on the main frame above the carrier, a selector bar pivotally mounted on the selector frame in front of the pivot of said frame and extending across the ath of travel of the carrier, and a selector pm on the bar adapted to engage a printing device to provide relative movement of the frame and bar.

5. In a machine of the character described, the combination of a selector frame and a plurality of selector bars carried thereby, said frame and bars being movable conj ointly and relatively, and selector pins on the bars adapted to engage a printing device to provide said relative movement.

6. In a machine of the character described, the combination of a main frame, a selector frame pivotally mounted thereon, a (plurality of selector bars pivotally mounte 011 the selector frame, said frame and bars being movable conjointly and relatively, and selector pins on the bars adapted to engage a printing device to provide relative movement of the frame and bars.

7. In a machine of the character described, the combination of a main frame, a selector frame pivotally mounted thereon, a plurality of selector bars pivotally mounted independently of each other on said selector frame, said frame and bars being movable conjointly and relatively, and selector pins on the bars adapted to engage a printing device to provide relative movement of the frame and bars.

8. In a machine of the character described, the combination of a main frame, a selector frame pivotally mounted'on the main frame, a plurality of selector bars inde endently pivoted on the selector frame, said frame and bars being movable conj ointly and relatively, and selector pins arranged on the bars to .aline with each other transversely of the frame to engage a printing device to provide relative movement of the frame and bars.

9. In a machine of the character described, the combination of a pivotally mounted selector frame, a cam on the frame, a depressor device arranged to travel on said cam to depress the frame, and means for moving said depressor device into and out of engagement With said cam.

10. In a machine of the character described, the combination of a selector frame and a selector bar pivotally mounted on'the frame and movable conjointly with and relative to said frame, a cam on the frame, a depressor device arranged to travel on the cam to depress the frame and bar, and a pin on said bar to engage a printing device to limit the depression of the bar relative to the frame.

11. In a machine of the character dec'ribed, the combination of a depressible selector frame, a cam on the frame, a depressor device arranged to engage the cam to depress the frame, and arecess in the cam to receive the depressor device at the limit of its travel in one direction.

12. In a machine of the character de? scribed, the combination of a depressible selector frame, a cam on the frame, a depressor arranged to travel on said cam to depress the frame, said depressor being pivotally mounted and adapted to be thrown out of operative relation with the cam.

13. In a machine of the character described, the combination of a selector frame and a selector bar carried thereby, a trip lever normally engaged with said selector bar, and a selector pin on the bar to engage a printing device and permit disengagement of the trip lever from the bar.

14. In a machine of the character described, the combination of a selector frame and a selector bar, said frame and bar being movable conjointly and relatively, an arm on the bar, a trip lever normally engaged with said arm, and a selector pin on the bar adapted to engage a printing device to provide relative movement of the frame and bar and thereby permit the triplever to be released from its engagement with said arm.

15. In a machine of the character described, the combination of a selector frame and a plurality of selector bars, said frame and bars being movable conjointly and relatively, an arm on each of said bars, a trip lever normally engaged with said arms, and a selector pin on each bar adapted to engage a printing device to provide relative movement of the frame and the bars and thereby permit the trip lever to be released from its engagement with said arms,

16. In a machine of the character described, the combination of a selector frame and a selector bar, said frame and bar being movable conjointly and relatively, an arm on the bar, a trip lever normally engaged with said arm, a selector pin on the bar adapted to engage a printing device to provide relative movement of the frame and bar and thereby permit the trip lever. to be released from engagement with said arm, a tripper and a reverser for shifting the normal position of the tripper relative to said arm whereby printing devices of a selected class may be printed or skipped as desired.

17. In a machine of the character described, the combination of a platen, a selector frame and a selector bar, said frame and bar being movable conjointly and relatively, tripper means controlled by the relative movement of said frame and bar for throwing the platen in or out of operation, and means for restoring said tripper means to normal position.

18. In a machine of the character described, the combination of a platen, a selector frame and a selector bar, said frame and bar being movable conjointly and relatively, tripper means controlled by said bar for throwing the platen in and out of operation, a restorer for restoring the tripper means to operative position, and means for throwing the restorer out of operation.

19. In a machine of the character described, the combination of a platen, a selector frame and a selector bar, said frame and bar being conjointly and relatively movable, a selector pin on said bar, tripper means controlled by the relative movement of said frame and bar for throwing the platen in or out of operation, and means for restoring said tripper means to normal position.

20. In a machine of the character described, the combination of a pivotally mounted platen, a selector frame and a selector bar, said frame and bar being conjointly and relatively movable, a selector pin on said bar, tripper means mechanically controlled by the relative movement of said frame and bar for throwing the platen in or out of operation, and means for restoring said tripper means to normal position.

JOSEPH S. DUNCAN.

Witnesses ERNEST H. MERCHANT, M. A. KIDDIE. 

